Support
There are four ways to get support. You can read the Users Manuals to know more about FastSum MD5 Checksum Checker and find some useful examples in using it, or take a look at the list of questions that users ask to find the answer immediately, or write a letter through the web-based form.
Video made by FastSum user (click for larger version):
If you have any questions, don't hesitate to contact us.
Command Line Edition User Manual\Usage examples